Safewaze 4-Person Rope Horizontal Lifeline Kit - 30 ft.* Includes 30 ft. of Rope Horizontal Lifeline to provide protection for up to 4 workers. * This system has everything you need, including a rope tensioner, 2 carabiners, 4 O rings for worker attachment, 1 captive swivel eye, and 2 heavy duty cross arm straps. * A swivel connection point keeps the rope from twisting while in use. * The lifeline tensioner comes with a wrench that is stored within the unit so you'll never fumble around for the right